uncleben
Global Moderator
It is not that easy. Rules state:
Once a team claims a player from waivers, it may not trade that player unless it first offers him to any other teams who made waiver claims for him. If the claiming team places the player on waivers in the same season and his original team claims him, the team may send the player to the AHL without placing him on waivers again unless he meets the criteria for waiver expiration below.
Which is exactly why Toronto can't send him to the minors without him clearing waivers again.
Also, Boston can only send him to the minors without waivers, if they reclaim him, IF they are the only team to put in a claim that time.
For example, say Toronto waives Griffith and Boston is the only team to claim him, they get him and can freely send him down (as it effectively means no other team wants him - same as clearing waivers the first time).
If instead, say Tampa puts in a claim too, but has worse waiver priority, Boston gets the claim, but standard waiver claim rules apply - he cannot be sent down to the minors without again needing waivers.
If Boston puts a claim in, and a team with better priority also puts in a claim, say Edmonton, then Edmonton gets Griffith from Toronto, and standard waiver claim rules apply again.